there will always be a market for exceptional artists, but what about the other 80-90% of people that used to be able to make a living and now can't anymore? What are they going to do? And without the possibility of a particular profession leading to gainful employment, very few people will even start it, making the funnel smaller and smaller until even exceptional artists won't be able to emerge at all.
We still have amazing master blacksmiths who've reached the pinnacle of the craft despite no economic demand for their skills, so clearly the lack of a market doesn't deter curious people looking for a hobby.
I've met a few master blacksmiths who do fair/con circuits, these are often guys who did stuff in their garage while working a regular job until they were able to build a customer base and online presence.